Torpedo.



P. J. HEDLUND.

TORIEDO.

APPLICATION FILED DEG. 21, 1907.

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.n :nimm l' nlll/////////// KOH N HEDLUND,

OF STOCKHOLM, SWEDEN.

TOBEEEDO.

No. 903,133. Specification of Letters Patent. Patented Doc. 8, 1908.

Application tiled December 2, 1907. Serial No. 07,592.

To .15H 'wlw/n. 'i t may concern:

lle it l-:nou'n that l, Pian JOHAN l'lnnLUNn,v eugiiieer, subject 01"' Swerlen, residing :it Jui-h1, Storkholnn Sweden, have invented new unil useful lmproven'ieuts in Torpecloes. olz which the following is :i specification.

rl`his invention relates to torpedoes driven by elustie. Suhl turbines, and particularly to torpedoes employing turbines liming4 two rotutingj ilrlvi: Q members, lfor exemple, n. mul n easing. enoh driving e propeller shzi't'. Such n turhine is shown for exemple in the patent to lzllen ilo. 888,390, (lated l), i905. ln such turbines the motive is usunliy exhausted directly to the outside, it being' inconvenient to Connect exhaust I 'ues n ectly to such turbines, intl the object en l u'iven'tion is to provide means for lischu no' the exhaust from sut-h turthe torpedo without providing vulves to permit surh tlisel arge while prerenting mitrfnee of water.

or l' 1,15 to my invention l inolose th i u ohuinlier ot' its own i' sid the torpedo und' separate from the nir tunlts of the lori lo. the turbine exhausting .flirectly into this chamber; und l conne-ot this chamber by ai suitable duct to :t chamber surrounding` n perforated portion ot' the two concentric propeller shafts, the inner of which ns well the outer, is tubular, the exhaust beine; surveyedV therefore to the innor of the two propeller shafts rhnrgetl therethrough.

rht urroirounying drawing illustrates a fornello surh referred. to.

lu s-rhl o' L=\.\.\'ins: Figure l shows longilion ol the rmi.' portion of a tor-l pedo einbo'ing'my invention; :intl 2 is e. siinihir rnwnientziry section showing in on n turbine such :is muy be used in iny torpedo.

ln suitl diluting, l. designates the turbine eoinpurtinent of the torpedo and 2 :t turbine 'ot the olas-s fleseribed, that is to say, u turbine the rn t which, :is Well us the interior f t which, rotzit es n hollon7 trunnion shaft llornb und dis tuf'iinui. se.

7 and 8 designate respectively, the outer und the inner propeller shafts, both hollow us shown, the outer shaft 7 likewise serving :is :i support for the turbine.

The turbine casing is provided with a number of exhaust holes et; through which the motor fluid is exhausted into compartment l.

ln SZ l have illustrated more or less liagraminaticnlly a turbine such as may be used in this torpedo, though it is to be understood that l (lo not liinit myself to any particular turbine since the turbine itself lorins noA portion of this invention.

A ohzunber G surrounds :i portion of the propeller shafts T and S, the portions of said `shafts lying within this chamber having in thon; perloratioiis 9 und l0; and this charnber 6 in Connected to the turbine compartment l by duet 5 serving to convey the exhuust troni the turbine compartment l to the perlorziions i) und 10 of the propeller shells, the exhaust therefore passing out through the inner shaft 8.

fr the Loi'istruotion shown it `will he .leiuthu/t the turbine easing is es free to rotate :is it it were rotating in the external oir, the exhaust pr. g freely into hainber l and. thence through hiet to propeller shaft :intl so out` llt the son e time no Che-ck Y, lre to prevent entrunoe of Water is reouirotl in this propeller shaft or duct 5 or i (liseun oenlng of the chamber l; tin-nine Com-pertinent is enrely istil-steal from the mein portion of the v i, etlo, vreterenntlono lun-in even it' it does enter this compartment. ln general water cnn never enter this couipzirtinent until the torpedo has run its vcourse, because the nir pressure in compartment l would be sulfieient to exclude witter.

llhnt l claim is :v-

torpedo comprising in combination e hull, concentric hollow propeller shafts, :i liuitl pressure ti'uoine directly connected to both ol. suini sho,AIA nd having n rotary onsiug connected to the outer of said, shafts to drive the suine, sziifl hull having a Closed compartment oontnining; this turbine, the ngefl llo exhaust directly into portion of said propeller shafts, and z, duct connecting said. chamber to the turbine compartment of the hull? the portions of Said shafts Within said cluu'nbel being perforated whereby the exhaust from the turbine passes o elle inner propeller slxaf and '1s discharged therethrough.

il l x two subscribing wtnessee.

PER JOHAN YVtnesses z WALDEMAR BovAN, Hzmmmn ZETERSTRQM. 

